What is DCIS (ductal carcinoma in situ)?
According to the U.S. National Cancer Institute (NCI), ductal carcinoma in situ (DCIS) is a condition in which abnormal cells are found in the lining of a breast duct, and those abnormal cells have not spread outside the duct to other tissues in the breast. NCI explains that in some cases DCIS may become invasive breast cancer and spread to other tissues, but that at this time there is no way to know which abnormal cells could become invasive. It may also be called noninvasive breast cancer, intraductal carcinoma, or stage 0 breast cancer. This is general information, not personal medical advice.
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NCI Dictionary of Cancer Terms — ductal carcinoma in situ (opens in a new tab) — National Cancer Institute (NCI)
Ductal Carcinoma In Situ (DCIS) (opens in a new tab) — National Cancer Institute (NCI)
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